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Siemens QJ23B150Y Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Siemens
QJ23B150Y
Molded Case Circuit Breaker
Brand
Siemens
SKU
QJ23B150Y
Quantity
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Siemens QJ23B150Y - 150A 3 Pole Molded Case Circuit Breaker
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Description
Built for specialized industrial power systems, the Siemens QJ23B150Y is a 150-amp molded case circuit breaker. It utilizes a fixed thermal-magnetic trip mechanism to deliver reliable long-time and instantaneous (LI) overcurrent protection. Designed with a bolt-on mounting style, this three-pole device integrates seamlessly into Siemens switchboards and panelboards. The breaker provides a 10kA interrupting rating at 240VAC and includes unique 400Hz calibration for high-frequency environments.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QJ23B150Y-R |
| Series | QJ |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Panelboards, Switchboards |
| Wire Gauge | 6 AWG-300 kcmil (Cu), 4 AWG-300 kcmil (Al) |
| Max Wire | 300 kcmil |
| Min Wire | 6 AWG (Cu), 4 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, 400Hz Calibration |
Product FAQs
6 answersWhat does the "Y" suffix indicate on the QJ23B150Y catalog number?
The "Y" suffix designates that this breaker features a 400Hz calibration. This makes it specifically suited for high-frequency industrial power systems, aerospace, or specialized military applications, rather than standard 60Hz commercial grids.
Can I use the QJ23B150Y to replace a standard QJ23B150 breaker?
It is not recommended unless your system operates at 400Hz. For standard 50/60Hz applications, you should use the standard QJ23B150 or its modern direct replacement, the Siemens QR23B150.
Which Siemens panelboards accept this QJ frame breaker?
This bolt-on MCCB is designed for unit-mount configurations and fits seamlessly into Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards.
Is the QJ23B150Y suitable for reverse-feed applications?
Yes, this breaker features a trip-free mechanism and is reverse-feed rated, meaning it can be safely back-fed in generator or alternative energy setups where power enters through the load terminals.
Is this breaker approved for use with HVAC equipment?
Yes, Siemens QJ frame breakers are HACR rated, certifying them for safe use with heating, air conditioning, and refrigeration systems that require reliable overcurrent protection.
What are the physical dimensions of this QJ frame breaker?
The QJ23B150Y measures 7 inches in height, 4.5 inches in width, and 2.53 inches in depth, which is standard for three-pole QJ frame molded case circuit breakers.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 10 reviews.
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Rating
10 reviews
- WMWilliam M.Verified BuyerReviewingSiemens QJ23B125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26Breaker
Perfect
- TNTimothy N.Verified BuyerReviewingSiemens QJ23B200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/27/2610% off
Arrived on time, worked when turned on
- WKWillie K.Verified BuyerReviewingSiemens QJ23B150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars7/22/26Breaker
The Breaker arrive fast and in good condition however when I looked at the specs it was not the correct one.
- PGPhil G.Verified BuyerReviewingSiemens QJ23B200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/26Great Service
I was in a bind for this breaker that was for an elevator, and Nick got me all the components even though their blizzard! Will use them for all my specialty breakers.
- VCVladimir C.Verified BuyerReviewingSiemens QJ22B200 - 200A 2 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars12/10/254 start
The breaker was it perfect match.,but it was missing the two top bolts.